[sheepdog] [PATCH 1/2] collie: fix buffer overflow of size_to_str()

[Liu Yuan]

From: Liu Yuan <tailai.ly at taobao.com>

We might end up with i == ARRAY_SIZE(units), which will cross array boundry.

Signed-off-by: Liu Yuan <tailai.ly at taobao.com>
---
 collie/common.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/collie/common.c b/collie/common.c
index 46f0123..a3a77aa 100644
--- a/collie/common.c
+++ b/collie/common.c
@@ -29,7 +29,7 @@ char *size_to_str(uint64_t _size, char *str, int str_size)
 
 	size = (double)_size;
 	size /= 1024 * 1024;
-	while (i < ARRAY_SIZE(units) && size >= 1024) {
+	while (i < ARRAY_SIZE(units) - 1 && size >= 1024) {
 		i++;
 		size /= 1024;
 	}
-- 
1.7.10.2